1 files changed, 23 insertions, 0 deletions
diff --git a/lib/paperclip/audio_transcoder.rb b/lib/paperclip/audio_transcoder.rb
new file mode 100644
index 000000000..323ec7bfe
--- /dev/null
+++ b/lib/paperclip/audio_transcoder.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module Paperclip
+  class AudioTranscoder < Paperclip::Processor
+    def make
+      max_aud_len = (ENV['MAX_AUDIO_LENGTH'] || 60.0).to_f
+
+      meta = ::Av.cli.identify(@file.path)
+      # {:length=>"0:00:02.14", :duration=>2.14, :audio_encode=>"mp3", :audio_bitrate=>"44100 Hz", :audio_channels=>"mono"}
+      if meta[:duration] > max_aud_len
+        raise Mastodon::ValidationError, "Audio uploads must be less than #{max_aud_len} seconds in length."
+      end
+      
+      final_file = Paperclip::Transcoder.make(file, options, attachment)
+      
+      attachment.instance.file_file_name    = 'media.mp4'
+      attachment.instance.file_content_type = 'video/mp4'
+      attachment.instance.type              = MediaAttachment.types[:video]
+
+      final_file
+    end
+  end
+end